This part is a kind of semiconductor called 80C552.

Function of this product has Single-chip 8-bit microcontroller.

Manufacturers : NXP

Image and pinout :

Some of the text within the PDF file :

INTEGRATED CIRCUITS 80C552/83C552 Single-chip 8-bit microcontroller with 10-bit A/D, capture/compare timer, high-speed outputs, PWM Product data Supersedes data of 1998 Aug 13 2002 Sep 03 Philips Semiconductors Philips Semiconductors Single-chip 8-bit microcontroller with 10-bit A/D, capture/compare timer, high-speed outputs, PWM Product data 80C552/83C552 DESCRIPTION The 80C552/83C552 (hereafter generically referred to as 8XC552) Single-Chip 8-Bit Microcontroller is manufactured in an advanced CMOS process and is a derivative of the 80C51 microcontroller family. The 8XC552 has the same instruction set as the 80C51. Three versions of the derivative exist: • 83C5528 kbytes mask programmable ROM • 80C552ROMless version of the 83C552 • 87C5528 kbytes EPROM (described in [ ... ]

80C552 PDF Datasheet Download